Its new iPhone app is sort-of a remote control for its website. It lets you watch some video within the app, if it's not Flash-based, and you can search, see what your friends are watching, manage your playlist, etc. The interface is clean, and if you're a web video watcher, it could be useful.

And, yes, you can check-in to shows, so your friends know what you're watching, and can tune in themselves. Clicker turned check-ins on for its website earlier this year. But the feature may be more useful on the iPhone app, where it's prominently placed.